Now that OS 3.0 has adopted a modularized design (main processor board + solenoid driver board), the long term plan is to take the OSBee circuit and makes a latching solenoid driver board for OS 3.0. The driver board will then also be used for OSPi so that OSPi (in the future) can also have three different versions: AC, DC (non-latching), and DC latching. More specifically, there will be a Pi hat that consists of LCD, buttons, and a connector to hook up to the OS 3.0 solenoid driver board. The driver board will provide power to RPi, and receives commands from RPi to open/close solenoids. As this involves a lot of design work (like I have to redesign the OSPi enclosure and so on), it will take a while.